Boundary between work & life

I have to show this quote to my wife who has been asking for the past 5 years since I joined Elsevier why I am spending a lot of time in front of my laptop:

"If an invidiual chooses a job that he or she really enjoys and that represents the values they believe in, the boundary between work and life may become meaningless"

Irwing Wladasky-Berger, VP for Technology and Strategy IBM (from IBM Global Innovation Outlook 2004)